Vacuum cleaning-machine.



O. DRAKE. VACUUM CLEANING MACHINE. APPLICATION FILED AUG.4. 191s.

Patented Feb. 2, 1915.-

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0. DRAKE. VACUUM CLEANING MACHINE. APPLICATION FILED AUGA. 191s.

Patented Feb. 2

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0131A DREAKE, OF CLEVELAND, OHIO.

VACUUM CLEANING-MACHINE.

Specification of Letters Patent.

Patented Feb. 2, 19115.

Application filed August 4, 1913. Serial No. 782,947.

To (ZZZ whom it may concern Be it known that I, ORA DRAKE, citizen ofthe United States, residing at Cleveland, in the county of Cuyahoga andState of Ohio, have invented certain new and useful Improvements inVacuum Cleaning-Machines, of which the following is a specification.

This invention relates to improvements in vacuum cleaning machines, allsubstantially as shown and described and particularly pointed out in theclaims.

In the accompanying drawings, Figure l is a bottom view of a machineembodying my improvement, and Fig. 2 is a sectional elevation thereof online 2-2, Fig. 1. Fig. 3 is-a transverse section on a line correspondingto 3-3, Fig. 1. Fig. l is a bottom View, enlarged, of one end of theshoe, both ends being alike. Fig. 5 is an elevation of the portion ofthe shoe shown in Fig. 4, looking in from the right. Fig. 6 is a detailof one of the bearing tubes or thimbles.

The invention herein larly in the shoe .9 and the novel means of supportfor the brush Z) therein. The said shoe, is diamond shaped and has anopening lengthwise thereof in its bottom approximately half the width ofthe bottom, or more, andnearly the full length thereof, while the fan fis located in the fan chamber lies more particu- 0 next above said shoeand adapted to be driven by an electric motorover or above said chamber,not shown. The said brush or sweeper Z) 1s mounted centrally lengthwisein the bottom of the shoe in the open-' iug therein on bearing tubes (Zset from below into upright tubular posts 4i supported in bridgeportions in the shoe near its extremities. The said tubes or tubularbearings have hexagonal or equivalent heads at their lower ends seatedin correspondingly shaped recesses 3 in the bottom of the shoeimmediately beneath or in the base oi the said tubular posts to preventturning, and said posts stand above-said bottom of the shoe in positionto serve as supports for the top or cover 5 upon the shoe. as seen inFig. The said posts or studs are provided at their inner or adjacentsides with vertical slots 0 open at their bottom through the bottom ofthe shoe and closed at their top some distance below the top of saidposts, and the brush 5 has a shaft 6 extendthese slots into the bearing111g through follows in the service 0t holes 7 in the said bearing tubesd. Short headed screws 8 seat on the top or cover of the shoe and engagethe internal thread in the bearings (Z and serve to fix the saidbearings removably in the shoe. Of course it a machine of this kind thatthe brush will require more or less frequent cleansing and hence removalfrom the machine. lten'uwal is therefore provided for and easilyeffected by taking out one or the other screw 8, or both, and

thus releasing the said bearings and perwhile the centrally disposedrollers or wheels- 16 front and rear in the shoe .9 are balancmg andcarryin rollers for the machine.

of course the ro. lers 16 work in conjunction.

with the said rollers ll in moving the machine over the floor, but therollers 14: are more essentially driving rollers for the brush and serveincidentally vtor balancing purposes. Otherwise the shoe would tilt onthe middle rollers and not work. The said bearings (Z and screws 8 servealso to hold the top and bottom members, 5 and of the shoe together, andthe said bottom can be removed with the brush when released and thusleave the top, or cover connected with the fan chamber In assen'iblingthe parts, the brush shaft is first inserted in the bearing holes 7 inthe bearirilg tubes d and then said tubes are placed in the said tubularposts 4, the open slots 0 in the said posts Facilitating this assemblingof the parts. The middle portion of the bottomol the shoe being open thebrush can be easily placed therein and is designed to run substantiallyon a level with the several rollers 14 and 16. The slots 0 in the posts4 terminate near the tops of said posts and the outer or edge portion ofthe shoe about its bottom on which it contacts with the floor is roundedand smooth and intended to lie closely upon the surface traversed. Hencethe several rollers cannot be said to carry all the Weight but they,verv greatly lighten the load when it comes to pushing the machineabout and are material on this account. The rollers 14: must have suchcontact as to rotate the brush.

What I claim is: v

- 1. In vacuum cleaning machines, a shoe of substantially diamond shapehaving tubular posts in its ends provided with open slots in theiradjacent sides and tubular bearings in said posts having holes on theiradjacent sides corresponding to saidslots,

" in combination with a rotatable brush hav- 1 its ends h their adjacentsides open through said boting spindles mounted in said holes and meansto fasten said bearings in said posts.

2. A vacuum cleaning shoe having a bottom provided with upright tubularposts in vertically disposed slots in 3. A vacuum cleaning shoe having abotbearing when through said slots and rollers on the ends of said brushadapted to rotate the brush? v 4. A vacuum cleaning machine having ashoe of substantially diamond shape having rollers front and rear at itsmiddle, in combinationwith a brush mounted in thesaid shoe and rollers.on the ends thereof in the ends of the shoe serving as driving meansfor said brush and as end supports for said shoe.

In testimony whereof I aifix my signature in presence of two Witnesses.

. ORA DRAKE. Witnesses:

F. C. MUssUN, E. M. FISHER.

